ANSWER:
1: Dámela. <u>D</u> ===> <em>Tú me das la corbata.</em>
2: Dánoslo. <u>C</u> ===> <em>Tú nos das el libro.</em>
3: Dénnoslo. <u>E</u> ===> <em>Uds. nos dan los libros.</em>
4: Dáselas. <u>A</u> ===> <em>Tú le das las llaves.</em>
5: Dásela. <u>B</u> ===> <em>Tú le das la llave.
</em>HOPE THIS HELPS...!!<em>
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It’s cual postre te gusta because if there were two choices they would ask you which dessert would you like
Most likely D since the noun árbol is masculine and you would use ese in that case.